– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Wed 18 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Wed 18 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Wed 18 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 117mm), heaviest during Fri afternoon. Freeze-thaw conditions (max 10°C on Wed afternoon, min 0°C on Sat morning). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 42mm), heaviest during Mon night. Freeze-thaw conditions (max 9°C on Mon afternoon, min -1°C on Sat night). Wind will be generally light. | ||||||||||||||||
Wed 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | |  |  |  |  | | |  |  | | | |
light rain | heavy rain | heavy rain | mod. rain | heavy rain | heavy rain | heavy rain | rain shwrs | some clouds | rain shwrs | clear | some clouds | rain shwrs | some clouds | cloudy | cloudy | heavy rain | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
5 | 20 | 13 | 8 | 27 | 16 | 17 | 11 | — | 0.6 | — | — | 0.1 | — | — | — | 25 | |
max °C | 10 | 10 | 10 | 10 | 10 | 10 | 8 | 7 | 1 | 3 | 0 | 5 | 6 | 4 | 8 | 9 | 7 |
min °C | 10 | 10 | 10 | 10 | 9 | 9 | 8 | 1 | 0 | 2 | -1 | 1 | 6 | 3 | 5 | 9 | 5 |
8 | 8 | 8 | 8 | 7 | 8 | 7 | -1 | -2 | 0 | -1 | 1 | 5 | 3 | 5 | 8 | 2 | |
2700 | 2550 | 2300 | 2300 | 2350 | 2200 | 1850 | 950 | 700 | 850 | 350 | 1100 | 1250 | 1400 | 1750 | 1750 | 1450 | |
Cloud base (m) | 550 | 550 | 600 | 600 | 550 | 550 | 550 | 850 | 600 | 700 | 700 | 1750 | 1000 | 4950 | 3350 | 3000 | 550 |
 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — |
 | 7:16 | — | — | 7:17 | — | — | 7:20 | — | — | 7:21 | — | — | 7:22 | — | — | 7:23 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 117mm), heaviest during Fri afternoon. Freeze-thaw conditions (max 10°C on Wed afternoon, min 0°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 42mm), heaviest during Mon night. Freeze-thaw conditions (max 9°C on Mon afternoon, min -1°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.